Transparently the most important feature of an fps is the ability to aim. With a bit of a lackluster availability to customize it makes people who are more conscious and aware of their input and minor adjustments to be made it is frustrating. Even with all of their problems in Halo 5, 343 did a decent job with the concept of being able constantly adjust each individual traits on the fly. Aside from the ability to completely eliminate a form of acceleration from your desired setting it was nearly perfect customization. But personally im aware most fps have a set sensitivity settings which implement half of the horizontal movement to a vertical ratio in addition this game also has hidden deadzones to stick inputs. This is also fustrating to fine tune those higher senses especially at long range without have to in a sense sacrifice more field of view by lowering your standards to set map or gamestyle. If there is any way to implent any of these options it would be greatly appreciated. There are many more flaws that needed to addressed but within my own eyes this is the most pressing.